Hydrotastic testing is the use of water to test a system for leaks. It uses what's called "Head Pressure" to force the water to escape from any part of a system that is not "sound". If the system is a "sound" system it will not lose any water. In the instance that water is lost then further isolation testing will need to be performed to locate exactly where the leak is.
Booster pump installed for LyondellBassell.